This is pretty kool..It's the Homura one, but it looks like they have the Madoka one too, I'm not searching the wtore for it, but It looks like they should have it..

^ I don't recommend going this path. That advertised item was released through gacha machines... 400 yen (~5.40 USD) a pop. For a small item like that, you can bet they will cheap out on the shipping and pocket a huge difference.